this is from left side of tank. As you can see my rocks are white, i was told this is a phase and brushing will help purple come back. I get lots of purple everywhere else exept for main tank. I use 2 250w 10k xm 2 95w vho atinic. Excuse the bubbles right now i did some cleaning today. Decent SPS growth although not so fast. Ca 420 mg 1350 alk was 8 dkh now i am raising to 10dkh (as of last week). Everything is going good and growing better and better. feel free to comment Casey